import re

def is_valid_phone_number(phone_number):
    pattern = r'^1[3-9]\d{9}$'
    return bool(re.match(pattern, phone_number))

# 测试
phone_numbers = ['13800138000', '12345678901', '19876543210', '11012345678', '19912345678']
for number in phone_numbers:
    if is_valid_phone_number(number):
        print(f"{number} 是有效的11位手机号码")
    else:
        print(f"{number} 不是有效的11位手机号码")

